From owner-freebsd-net@FreeBSD.ORG Fri Sep 26 17:58:22 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9E6B010656A6 for ; Fri, 26 Sep 2008 17:58:22 +0000 (UTC) (envelope-from toasty@dragondata.com) Received: from tokyo01.jp.mail.your.org (tokyo01.jp.mail.your.org [204.9.54.5]) by mx1.freebsd.org (Postfix) with ESMTP id 600288FC4E for ; Fri, 26 Sep 2008 17:58:22 +0000 (UTC) (envelope-from toasty@dragondata.com) Received: from tokyo01.jp.mail.your.org (localhost.your.org [127.0.0.1]) by tokyo01.jp.mail.your.org (Postfix) with ESMTP id 4528C2AD57A1 for ; Fri, 26 Sep 2008 17:42:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=dragondata.com; h= message-id:from:to:content-type:content-transfer-encoding :mime-version:subject:date; s=selector1; bh=UBoyDPNCumHotktUO+Hz O2ODjAg=; b=5y5XyqYPFTKnNPyBzZImzVHp4k/QktqIkYHkBbsy9O9ZYA6AJGmA lfvbe4ogQQ+jmLW2OffAgv/AU1nSyqGNRsqCfePciqEVKuhLYOiG0stRY9rbwMqS +6ToVYLbed1Wh7FU7jJCF3+DM+GFthmSybFdh+rf8aH75YjhFHP0Fnc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=dragondata.com; h=message-id:from :to:content-type:content-transfer-encoding:mime-version:subject: date; q=dns; s=selector1; b=n4yC14w0xlnWG8ILhgV/LnLIer1Ry2kFcAhp r4XNRxpDKNWLrKKMkjVbAx+sivS57apgM5Y6JYDH6lyD4rvPN+j40vZFm1zk7aLQ JeikgGGGktDCud5bkEfF4IVTOr605rknUPM6+O6pxT+C3RXIEix0l825wJeH+WSb z5rqcHU= Received: from mail.your.org (server3-a.your.org [64.202.112.67]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by tokyo01.jp.mail.your.org (Postfix) with ESMTPS id 08ED82AD57A0 for ; Fri, 26 Sep 2008 17:42:03 +0000 (UTC) Received: from [216.14.99.244] (unknown [216.14.99.244]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mail.your.org (Postfix) with ESMTPSA id 7C51AA0A79E for ; Fri, 26 Sep 2008 17:42:01 +0000 (UTC) Message-Id: <81F28D26-4E90-4C6F-94DB-FB834F3B78F9@dragondata.com> From: Kevin Day To: freebsd-net@freebsd.org Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v929.2) Date: Fri, 26 Sep 2008 12:41:56 -0500 X-Mailer: Apple Mail (2.929.2) Subject: sfbufs on amd64? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Sep 2008 17:58:22 -0000 When using sendfile() on an amd64 box, are sfbufs still used/needed? The reason I ask: # netstat -m 0/0/0 sfbufs in use (current/peak/max) 0 requests for sfbufs denied 0 requests for sfbufs delayed 1334122 requests for I/O initiated by sendfile kern.ipc.nsfbufsused: 0 kern.ipc.nsfbufspeak: 0 kern.ipc.nsfbufs: 0 Does sendfile work differently on amd64 so that sfbufs aren't needed, or is this a statistics issue? This is in 7.0-RELEASE, btw. -- Kevin